Each bar comes with a card explaining the banknote that is recreated on the silver bar. The green literature case is custom made to preserve all 50 cards.
It also includes collector's tongs to handle the bars and a magnifying glass to enjoy the amazing detail of each bar. Most people have never seen such an impressive set of silver bars. These are rare and therefore hard to come by.
The set is missing the green explanation card for ingot #37.